"i was wondering if it possible to create a for loop using names instead number... i was thinking to create a vector with all names, but i don't know if can be used as index in the for loop"
It is certainly possible with MATLAB to define the loop iterator to be text (e.g. string scalar), but in practice it is usually much easier to loop over indices than over data.
"there is another way to create a for loop to filter/group data?"
Probably, but as you did not give a description of your data in terms of MATLAB arrays (e.g. size, type, arrangement of the data) nor what data processing you are doing then we can only give general advice, e.g.
